Subpixel character positioning with antialiasing with grey maski

Details Subpixel character positioning with antialiasing with grey maski Subpixel character positioning with antialiasing with grey maski

1996-06-21

1997-12-23

Coles, Sr., Edward L.

Image analysis

Pattern recognition

Template matching

382298, 382299, 358456, H04N 1387, G06T 1100

Patent

active

057013659

ABSTRACT:
A method for combining foreground objects defined by a mask value and shade value, with a background image defined by a shade value, using high resolution edge information derived from low resolution grey image representations. By treating the object edge pixels in a high resolution grey model, characteristics of an edge represented by an edge pixel can be approximated by reference to surrounding grey elements. Movement of the edge can be approximated by changing the mask values in the high resolution grey model. Changes in the overall grey level of the pixel resulting from the mask changes cause the impression of edge movement in the low resolution edge.

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